19.CentOS7添加用户并授予Root权限

1. 添加用户

useradd jen

2. 修改密码

passwd jen

3. 修改 /etc/sudoers

##      user    MACHINE=COMMANDS
##
## The COMMANDS section may have other options added to it.
##
## Allow root to run any commands anywhere 
root    ALL=(ALL)       ALL
## 新增以下这一行
jen     ALL=(ALL)       ALL 

4. 修改 /etc/passwd

root:x:0:0:root:/root:/bin/bash
# ... 这里省略几十行
# jen:x:1000:1000::/home/jenkins:/bin/bash修改成...0:0...
jen:x:0:0::/home/jenkins:/bin/bash

5. 完成